A-49 Updates & Drivers A-49 System Update Version 1.40 This is the latest version of operating system for the A-49. After downloading and extracting the compressed file, please refer to the “A-49_System_Update_Procedure” pdf document included for the update procedure. A-Series Keyboard Driver Ver.1.0.4 for macOS Big Sur 11.x or later SMF Player for macOS Big Sur 11 or later For macOS Big Sur 11 and later, please use this. SMF Player for macOS 10.13 - macOS 14.x